When soldering, you normally require using a Flux Cleaner to establish suitable joints. There are numerous types of flux cleaner, and they can be discovered in pen, liquid, or spray kind, in addition to within the solder wire itself. Below is a quick summary of a number of types of fluxes. As constantly, if you have any issues on the application of a specific product, the producer is the best place to pick up to date info.
No-clean fluxes are rather weak, and the residue that they leave will generally not hurt your devices. This is why they are called no-clean; the residue it develops can be left on the board and it will not rust your parts. If you are applying a conformal ending up to your PCB then you will need to clean the residue from no-clean fluxes so you can guarantee even protection.
Mildly Activated Rosin
Mildly triggered rosin fluxes are a bit more effective than no-clean, however likewise usually leave a non-corrosive and non-conductive residue. This Flux Cleaner varies from manufacturer to maker, so make sure to read the instructions prior to leaving the residue to rest on a sensitive aspect. Mildly triggered rosin fluxes also have a high thermal stability, making sure that preheating does not deteriorate its solubility.
Triggered rosin fluxes are the next action up from the mildly triggered rosins. The consisted of power in the activated rosin can get rid of oxides that no-clean and mildly activated fluxes cannot. The residue left from activated rosins may be corrosive, so take a look at the data sheet or talk to the maker to see if your specific Flux Cleaner requires to be cleaned the board after soldering.
Inorganic acid fluxes are likewise very strong, best to help solder difficult metals. This can be exceptionally practical for heavily oxidized metals, or for products that have a low solder capability. Once again, a corrosive residue is left behind, so a hot water or solvent rinse is required to safeguard your board.
Water SolubleThis Flux Cleaner is made to be quickly cleaned off, particularly throughout wave soldering processes. Water soluble fluxes are a few of the best, and will definitely corrode your PCB if left on, so make sure to entirely tidy up off any residues left behind by this flux cleaner.